彩色印刷复制中色差公式加权系数的计算和可接受阈值的评价
Evaluating Acceptability Threshold and Weighting for Color Difference on Gloss Paper Reproduction
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摘要: 对印在有光泽的铜版纸上的9个颜色中心、共216种颜色色样进行了视觉评价和客观测量,得出了每种颜色中心的色差的可接受阈值;然后,应用视觉评价标准确定了可用于CIE94、CMC和CIE2000中的最佳l∶c加权系数,并将ΔE94(l∶c)、ΔEcmc(l∶c)、DE2000(l∶c)与ΔEab进行了比较。Abstract: An experiment will be done with 9 color centers(216 color samples) and 20 observers to find out the mean of acceptability threshold of each color difference,and visual scale result is used to improve color difference by optimum l∶c weighting.The CIE94,CMC and CIE2000 color difference equations were used,ΔE94,ΔE_(cmc),DE2000 were compared with ΔEab.